Instead of sensing the source by one server, we consider the multiple sensing problem, where updates arrive at sensors and are sent to the receiver (monitoring facility) through multiple servers. In this work we study the settings of homogeneous and heterogeneous arrival and service rates and extend our previous results in [1]}.
We study the average age of information defined as in [2]}.
We consider AoI in a multiple sensing network and assume that a number of shared sources are sensed and then the data is transmitted to the monitor by \(n\)  independent servers. For example, the sources of information could be some shared environmental parameters, and independently operated sensors in the surrounding area obtain such information.
As another example, the source of information can be the prices of several stocks which is transmitted to the user by multiple independent service providers. Throughout this paper, a sensor or a service provider is called a server, since it is responsible to serve the updates to the monitor. In this paper we aim to answer the question how much gain in terms of AoI we can get using multiple servers.
